Ubuntu Software Center gets a massive update for Ubuntu 16.04

After long days inactivity, finally Ubuntu Software center gets a massive update. Unfortunately, this update is only available for daily builds of Ubuntu 16.04 LTS.
New update includes use of `Ubuntu One` token for authenticating to server, support for Adwaita dark theme, removal of extra channel support ..etc

From a news article published in softpedia linux section:

It’s been a long time since we had an update for the
Ubuntu Software Center and we didn’t really expect one. The Ubuntu
developers have already announced that they plan to replace the Ubuntu
Software Center with GNOME Software (adapted for Ubuntu), but that’s
only happening for Ubuntu 16.04 LTS.

The Ubuntu community doesn’t particularly love the
available Software Center, and Canonical didn’t put any effort into
improving it in the past couple of years. It’s been stuck at version
13.10 for quite some time, and just a couple of security updates were
issued. This latest upgrade for USC brings the version number up to
16.01 from 13.10, which is a really big jump.